FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 69 



than in adults from Venezuela. The finger webs of the young frogs 

 are also a little less developed; otherwise, the specimens agree very 

 well. On the Bahia frog a vestige of color pattern still remains, and 

 this is typical of that found in most adult H. crepitans. 



Although H. circumdata has been considered distinct from crepitans 

 ever since its description by Cope in 1867, a study of variation demon- 

 strates the inclusion in crepitans of every character supposed to 

 differentiate circumdata. The most obvious one, the appearance of 

 narrow dark lines on the front as well as on the top and rear of the 

 femur, supposed to be a characteristic of circumdata alone, is found to 

 occur in all degrees of distinctness in a series of crepitans. The heel 

 may be smooth, or may have a ridge or tubercle in a series containing 

 plain and lined femora. The limb and head proportions, and the 

 webbing of feet and hands, are likewise similar. 



An adult crepitans with a median dark dorsal line, wliich occasionally 

 appears in this species, is very suggestive of a half-grown H. Jaber. 

 The head contour and body proportions may also be singularly alike, 

 especially if one of the shorter-legged examples oi jaber be chosen for 

 comparison. 



The type of Hyla leprieurii Dum6ril and Bibron, MHNP 389, has 

 the toes half webbed and the fingers webbed only at the base; there 

 are no lateral skin serrations on the legs or arms, and the coloration 

 consists of dark rectangular spots across the back, wide dark bars on 

 the legs, and a dark canthal line and ear patch. 



Remarks. — Although H. crepitans has an external head shape and 

 internal tooth structure very different from H. raniceps, they may often 

 be confused, on superficial examination of color pattern alone, because 

 of the somewhat similar style of crossbanding on the hind legs. 



Specimens examined 



BRAZIL: MHNP 4624, Claussen. 

 Bahia: Bahia, USNM 75987, de Lacerda; MP 469; NHMW 1109, Wucherer. 



Toca da Onga, USNM 52610, Rose, June 27, 1915. 

 DisTRiCTO Federal: Rio de Janeiro, MCZ 1508 (cotype of Hyla circumdata), 



Thayer Expedition, 1864-65. ZSBS, A. Lutz, 1932. 

 MiNAS Gerais: Agua Limpa, Ouro Pr^to, USNM 98020, Cochran, Dias, and 



Venancio, Mar. 19, 1935. Areal do Callias, MCZ 1873. Riachfio da Cruz, 



IB 304-8. Rio Arassuahy, MCZ 1874 (3). 

 ParaIba: Campina Grande, USNM 109164, von Ihering. Elembuzeiro, 



USNM 109165-6, von Ihering. Independencia, CAS 49685, Heath, July 2, 



1911. 

 Pernambuco: Bonito, MCZ 2825 (3). Caruard, USNM 97095, Pickel, 



January 1928; USNM 109163, von Ihering. Garanhuns, BM 81.7.4.4, 



Forbes. Tapera, USNM 97066, Pickel, July 13, 1932. 

 Rio DE Janeiro: Bonito, Serra da Bocaina, USNM 96645-7, A. Lutz. Inde- 

 pendencia, near Petr6polis. USNM 97644, A. Lutz, B. Lutz, and Cochran, 



May 5, 1935. Petr6polis, MCZ 2497. Serra de Maca6, USNM 102550. 



